Power driven rotary brush



Sept. 12, 1933. A -ALBERA 1,926,223

POWER DRIVEN ROTARY BRUSH Filed Jan. '7, 1930 2/ 4 3 H H y 30 INVENTOR.37 Mm ATTORNEY Patented Sept. 12, 1933 UNITED STATES PATENT OFFICEAngelo Albera, Concord, Calif.; Robert J. Albera administrator of saidAngelo Albera, deceased Application January 7, 1930. Serial No. 419,047

1 Claim.

The invention forming the subject matter of this application relates tobrushes and more par ticularly to a power driven rotary brush applicablefor brushing and polishing shoes.

An object of the invention is to provide a rotary brush having aflexible brush head or body portion and a brushing element removablycarried by said brush head and wherein said brush is adapted to beremovably coupled to a driving motor for rotation thereof.

A further object of the invention is to provide a rotary brush having ahollow brush head or body portion constructed of flexible material andadapted to be inflated with air and having a stem whereby said brushhead may be directly coupled to a drive shaft of an electric motor forrotation thereof.

Another object of this invention is to provide a rotary brush of thecharacter set forth which is highly useful and simple'in construction.Convenience of arrangement, lightness and comparative inexpense ofmanufacture are further objects which have been borne in mind in theproduction and development of the invention.

which will be made manifest in the following detailed description andspecifically pointed out in the appended claim, reference is had to theaccompanying drawing for an illustrative embodiment of the invention,wherein:

Fig. 1 is a side elevation of the rotary brush forming my inventionshown attached to an electric motor.

Fig. 2 is a sectional view of the brush taken longltudinally through thecenter of the brush.

Fig. 3 is a sectional detail view taken on the line 3-3 of Fig. 2showing the device for coupling the brush to the electric motor.

Fig. 4 is a longitudinal sectional view of the coupling device taken onthe line 4-4 of Fig. 3.

Fig. 5 is a longitudinal sectional view showing the interiorconstruction of the Eichraeder valve.

Referring to the accompanying drawing wherein similar referencecharacters designate similar parts thruout, the several views describedabove adequately illustrate my invention, and the following detaileddescription is commensurate with the above mentioned drawing in enablingan artisan to construct and assemble the constituent parts of the same.

In carrying out my invention I make use of a tubular pneumatic elementor body member designated by the reference numeral 5, having closed ends6 and 7. The body member 5 is constructed 01 flexible material,preferably rubber or a composition thereof, and is of airtightconstruction. Formed centrally in the end 7 of the body member 5 is anaperture 8 having annular shoulders 9 formed around said aperture andprotruding from the inner and outer faces of the end 7. Numeral 10indicates a tire or Schraeder type valve stem, forming a shaft for thebrush element, which is fixedly secured at one end thereof in theaperture 8 by means of the valve flange 11 and nut 12. The tire orSchraeder valve 10 provides an inlet to the body member 5 whereby airmay be pumped into said body for inflating the same.

The Schraeder valve is illustrated on an enlarged scale in Fig. 5, thebody 10 of the valve preferably having the threads 29 partly removed foruse in my device. The body 10 has a bore 30 extending therethrough, andis counterbored as at 31 to provide a seat for the spring thrust cap 32.The counterbore is threaded at 33 to receive the sealing plug 34, and isrecessed at 35 to clear the valve seat shell 36, which is fixed toplunger 37 and movable therewith and has a resilient valve seat 38secured in the cupped recess. With the foregoing and other objectsinview,.

which is adapted to cooperate with the reduced cylindrical end 39 ofmember 34. Member 34 has a resilient sealing ring 40 disposed in anannular groove as shown, and has an axial aperture 41 clearing piunger3'7, said plunger being also slidable in an aperture in the springthrust cap 32. A helical spring 42 forces the valve seat 38 against theend 39 of member 34 thereby preventing escape of air. The opposite endof the valve body is provided with the usual flange 11 which is insertedthrough the aperture 8, and nut 12 drawn up to clamp the brush body 6 tothe valve body.

A brushing element is removably carried by the pneumatic body member 5and consists of a sleeve 13 constructed of any suitable fabric materialhaving a heavy nap as indicated at 14. The sleeve 13 is formed in such amanner as to be open at one end thereof and closed at the other, the napof course extending from the outer surface of said sleeve. In fittingthe sleeve 13 over the body member 5 it is preferable that the operationbe accomplished before the body mem# her is inflated, so that when fullyinflated it will ins. Said means comprises a coupling 21 consisting of acylindrical member 22 having a central bore 23 extending therethru. Itis preferable that the valve stub shaft 10 of the brush 5 and the motorshaft 16 be of equal diameter so that the bore 23 may be uniform thruoutits length and providing a slip fit therewith.

Adjacent each end of the coupling 21 there is formed a threaded aperture24 which extends radially from the bore 23 of said coupling. Disposedwithin the apertures 24 are steel balls 25 which are retained on seatsformed at the inner ends of the apertures, the balls extending partlyinto the bore 23. Coil springs 26 are disposed in the apertures 24 andcooperate with the balls 25, plugs 27 being threadedly secured in theaperture's 24 for retaining springs 27 under compression on the balls25.

Adjacent to the outer ends. each of segmentospherical depressions 28 areformed in shafts 10 and 16 which are adapted to cooperate with the balls25 when the shafts are inserted in the bore 24 as is clearly shown inFig. 4. In this manner the brush shaft 10 is detachably coupled to themotor shaft 16 and caused to rotate therewith.

I am aware that some changes may be made in the general arrangements andcombinations of the several devices and parts, as well as in the detailsof the construction thereof without departing from the scope of thepresent invention as set forth in the foregoing specification, and asdefined in the following claim.

I claim:

A cylindrical elastic envelope having a reinforced axial aperture at oneend thereof, a tire valve secured in said aperture. said tire valveforming a shaft extending from the end of said envelope and providingmeans for inflation thereof, a cylindrical coupling provided with abore, a ball resiliently urged into'the bore, said shaft having formedin the periphery adjacent the outer end a segmento-spherical recess forengagement with said ball.

I ANGELO ALBERA.

